doi:10.15468/q2hyob13054The First Atlas of Wintering Birds in Britain and Ireland: 1981/82-1983/84.Olivia CroweBirdWatch IrelandUnit 20, Block D, Bullford Business Campus, Kilcoole, Co. Wicklow, IrelandIRELAND353 (0)1 2819878ocrowe@birdwatchireland.iehttp://www.birdwatchireland.ie/National Biodiversity Data Centre, IrelandBeechfield house, Carriganore WIT West CampusWaterfordCounty WaterfordIRELAND+353 (0)51 306 240info@biodiversityireland.iehttp://www.biodiversityireland.ie/
2017-07-28
ENGLISHA dataset of the distribution and abundance of the wintering birds in Britain &amp; Ireland from 1981 to 1984, generated using a list of the species observed and counts of individuals seen within each 10km square over the survey period.Full details of the methods used in the field, how fieldwork was organised and the interpretation of the maps is provided in the published atlas Lack, P. (1986) The Atlas of Wintering Birds in Britain and Ireland. T. & A.D. Poyser, Calton, or from the British Trust for Ornithology website at www.bto.org/birdatlas/previous/old_methods.htm. Specific queries as they relate to the Republic of Ireland should be made to BirdWatch Ireland at info@birdwatchireland.ieThis work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.http://maps.biodiversityireland.ie/DataSet/21This datasets contains data only for the island of Ireland, but is part of the larger Britain and Ireland master dataset held by the British Trust for Ornithology at Thetford, U.K. All 10-km squares within the island of Ireland with more than a very small amount of land were visited.-10.699-4.30155.4351.377 1981-01-01
1984-01-01
The records were collected to compile as complete a wintering species list as possible for each 10-km square and provide a count of the number of each species seen. The dataset was used to produce the first BTO/IWC Wintering Birds Atlas (Lack P. (1986) The atlas of wintering birds in Britain and Ireland. T. & A.D. Poyser).BarryO'NeillNational Biodiversity Data Centre, IrelandBeechfield house, Carriganore WIT West CampusWaterfordCounty WaterfordIRELAND+353 (0)51 306 240boneill@biodiversityireland.iehttp://www.biodiversityireland.ie/Specific fieldwork was conducted by mainly volunteer observers although professional help was used in some remoter areas.Two methods of fieldwork were requested from observers:1) Specific timed visits. An observer visited a 10-km square for a minimum of one hour and was asked to count all the individual birds seen in that time. At the end of the project these counts were standardized to a 'day' defined as 6 hours in the field by using a regression of numbers seen on time spent on a species specific basis.2) Supplementary Records. Observers were encouraged to send in any and all records of counts of species from 10-km squares. In particular these records were of species not seen on timed visits and those involving high numbers.The final published maps used the maximum count in a day over all three winters of each species divided into 3 levels such that 50% of positive records were placed in the lowest category (1), 30% in the middle category (2) and 20% in the highest category (3).The maps as published are considered a true representation of the distribution and relative abundance of each species at a national level during the survey period. There will be some gaps in individual squares, especially for some of the more elusive and rarer species and some bias due to observer intensity.2017-08-18T04:58:16Z(2017). The First Atlas of Wintering Birds in Britain and Ireland: 1981/82-1983/84.. National Biodiversity Data Centre. Occurrence Dataset https://doi.org/10.15468/q2hyob accessed via GBIF.org on 2017-08-18.